At about 11:25 AM on Tuesday September 13, 2016, officers assigned to the Youth Violence Strike Force executed a search warrant as part of an active and ongoing investigation in the area of 15 Humphreys Street in Dorchester. Officers were able to recover of a loaded 9mm SCCY CPX handgun, a loaded Python .357 Magnum revolver, a loaded .40 caliber Springfield Arms XDM-40 with an obliterated serial number and a total of 189 rounds of ammunition. As a result, the target of the investigation, Arnaldo Dossantos, 23, of Dorchester, was placed in custody without incident. The suspect will appear in Roxbury District Court on charges of Unlawful Possession of a Firearm (3 Counts),Unlawful Possession of Ammunition, Possession of a Firearm with an Obliterated Serial Number and Possession of a Large Capacity Feeding Device.